Ford Galaxy powershift clutch or gearbox

hi my galaxy developed a slight shudder when turning on to a steep hill was advised by ford to get a gear oil and filter change so took it to local garage to get done the next day my car was stinking of oil fumes so took it back he took undertray off and it was soaked in oil didnt know where leak was coming from so said run it a few days see what its like well a did and there was still oil leaking from somewhere then got warning saying transmission limeted function and wouldnt move in reverse so went to different garage and they said oil leak was coming from inside bell housing and sorted that they also said they had to drain gear oil as it was overfilled so drained it to max and road tested it and said it was fine when i picked it up a drove approx 1 mile and warning light came on again and it was just not finding gears and roaring a bit so not really sure if its the auto clutch or gearbox thats the problem could it be possible if you could price both just to see if it worth going ahead and getting fixed a would oviously need to try somehow to get it transported up there as i live in scottish borders and there is no clutch or gear box specialists near here thanks your help in this matter would be grateful